When RMAH launches.
I have seen bot spam selling it illegally for 30 bucks, and this seems ridiculous to me. I can't imagine it being that high when the RMAH goes live. Considering good items go for upwards of 12 million gold - 360 dollars for one item is just mind boggling.
Back in the day, I remember buying a zod rune to finish my Breath of the Dying, and it was only 2-3 bucks.
Are people really willing to spend cash to the point of 1,000,000 gold = 30 bucks?